Finding the Third Proportional to 20,991 and 45,834

Step by Step Solution

1. Step 1: Write the proportion equation
   20,991 : 45,834 = 45,834 : x
2. Step 2: Convert to fraction form
   20,991/45,834 = 45,834/x
3. Step 3: Cross multiply
   20,991x = 45,834 × 45,834
4. Step 4: Simplify right side
   20,991x = 2,100,755,556
5. Step 5: Solve for x
   x = 2,100,755,556/20,991
6. Step 6: Final answer
   x = 100,078.87